When the paper is warped, the paper loop flag is pressed up, and the paper loop sensor (SR6001) is turned ON. In this case, the DC controller increases the rotational

speed of the fixing motor.

When the paper loop sensor is turned OFF, the DC controller determines that the level of paper warp is small and decreases the rotational speed of the fixing motor.

Fixing sleeve

Fixing pressure roller rotational speed is faster

than ETB feeding speed.

MEMO:

If there are appropriate distance between the transfer unit and the fixing assembly in the product, this control is not necessary to make paper warped.

However, since the machine performs vertical feeding and it is necessary to minimize its height, no distance can be secured between the transfer unit and the fixing

assembly. Therefore, it is necessary to perform warp control.

8-10

Fixing pressure roller

Paper loop sensor

Paper loop flag

Paper

ETB

Fixing pressure roller rotational speed is slower

than ETB feeding speed.

F-8-9

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